| Event Id | 1306 |
| Source | MSExchangeDS |
| Description | Register LDAP protocol failed with error 10048. If port number 389 is used by another application, change to an unused port, then shut down and restart Microsoft Exchange Directory Services. Contact Microsoft Support Service if condition persists. |
| Event Information | "According to Microsoft: CAUSE : When you run the Add User Wizard from the console, it attempts to make a Lightweight Directory Access Protocol (LDAP) query to the Microsoft Exchange server on TCP port 389 (by default). The ILS may start before the Exchange Directory service, which would take control of TCP port 389. RESOLUTION : configure Microsoft Exchange to use a different port, allowing the ILS to use TCP port 389. The Add User Wizard can query Exchange on the alternate port. To change the port assignment for the Exchange Server LDAP service: 1. Start the Exchange Server Administrator program. 2. To change LDAP port assignments for all servers within the Site, make the following changes: a. Expand on Site Name\Configuration\Protocols\LDAP (Directory) Site Defaults object. b. Change the port assignment from 389 to a port which is currently not in use. This can be done by going to a command prompt, and typing the following command:netstat -an This command will display all active ports that are listening on all interfaces. Choose a port number that does not conflict with any of those ports that are in use. c. Click OK, stop, and restart the Exchange Directory service. Now all servers within the site will listen for LDAP requests on the newly assigned port. This requires Use site defaults for all properties to be selected for the LDAP protocol on each of the servers within the site. 3. To change LDAP port assignments for individual servers within the Site, make the following changes: a. Expand on Site Name\Configuration\Servers\Protocols\LDAP (Directory) Settings object. b. Change the port assignment from 389 to a port which is currently not in use. This can be done by going to a command prompt, and typing the following command: netstat -an This command will display all active ports that are listening on all interfaces. Choose a port number that does not conflict with any of these ports. < |
| Reference Links | ILS May Cause SBS Wizards Not to Work How to Change LDAP Port Assignments in Exchange Server |
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